How do I interpret the "0-" in the Retreat Column for Assult and Support units. Does it man that if the die roll result + DRM's lees than or equal to 0 the unit retreats, or does the "0-" mean that Assult and Support units never reterat?

How do I interpret the "0-" in the Retreat Column for Assult and Support units. Does it man that if the die roll result + DRM's lees than or equal to 0 the unit retreats, or does the "0-" mean that Assult and Support units never reterat?

The way that I read it is if the modified result is a 0 then that said battalion retreats. I know a command battalion retreats on a 0-1. It was not until I read the board the other day that if you reduce a battalion to half strength then the battalion roll is a -3 in the move step.

So if you have an assault / support battalion that is reduced to half strength and you roll a 1-3 then it would retreat. A command battalion reduced to half strength would retreat on a roll of 1-4 if reduced.